Krishna

(the black one). The eighth avâtara or incarnation of Vishnu.
Kansa, demon-king of Mathura', having committed great ravages, Brahman
complained to Vishnu, and prayed him to relieve the world of its
distress; whereupon Vishnu plucked off two hairs, one white and the
other black, and promised they should revenge the wrongs of the
demon-king. The black hair became Krishna. (Hindu mythology.)